noun

keratin

keratin

Hair and nails are made of keratin.

Hair and nails are made of keratin.

Keratin treatments can make hair smooth.

Keratin treatments can make hair smooth.

((sth.)) is made of keratin (sth.) is composed of keratin Hair and nails are made of keratin.

Synonyms: protein, fiber; Antonyms: none

From Greek 'keras' meaning 'horn', plus the chemical suffix '-in'.

Think of 'keras' (horn). Keratin is the hard protein that makes up horns, hair, and nails.

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